This herbalist potion erupts in a cloud of foul-smelling gas when shattered. When broken, using an action, it fills a sphere with a 20-foot radius with a light mist. The sphere spreads around corners. It lasts for 5 minutes or until a wind of moderate or greater speed (at least 10 miles per hour) disperses it. Each creature inside the radius must make a DC 15 Constitution Saving Throw, receiving 1d4 of Poison Damage and becoming Stunned on a failure. A creature beginning its turn covering its nose/mouth makes this save with Advantage. A creature that has Advantage on Perception Checks based on smell makes this save with Disadvantage. The Stunned Condition lasts until the afflicted creature has breathed fresh air (at least 10 feet away from the target sphere) for at least one turn.